Conclusion

Western art music developed at the most fundamental level out of the desire to elaborate on and heighten the body of Gregorian Chant that lay at its heart. As this development unfolded, musicians settled on a scheme to slow the chant down, place it at the bottom of, or later within, a polyphonic texture, and adorn it with their own musical ideas and inventions. Such a long-note cantus firmus served as the foundation of sophisticated composition for an astonishingly long time; indeed, thanks to Johann Joseph Fux, one could say that it has never entirely disappeared from compositional engagement. By the end of the fifteenth century, musicians had been laying out their most sophisticated music, whether improvised or composed, on top of and surrounding such a cantus firmus since at least the high Middle Ages, and this music thus had its structural foundation largely determined for it at the pre-compositional stage. The musicians’ goal, then, was to adorn this foundation with all of the variety they could provide....